. Comparative anatomy and physiology. Chap. III.] GROUPS OF PROTOZOA. I. Rhizopoda; example: Amoeba, Gromia, Nummu- lites. II. Heliozoa ; example: Actinophrys (Sun animal- cule). III. Radiolaria ; example : Acanthometra, Fig. 2 B.— Actinophrys sol, showing the racuolated ectosarc, the finely granulated endosare, the nucleus, contractile vacuole, and pseu- dopodial filaments. (Aiter Leidy.) Leaving out of onr consideration those simple and incompletely known forms in which no nucleus is developed in the protoplasm (ITIonera),* we may dis- tinguish the naked Amoeba-like Rhizopoda from
. Comparative anatomy and physiology. Chap. III.] GROUPS OF PROTOZOA. I. Rhizopoda; example: Amoeba, Gromia, Nummu- lites. II. Heliozoa ; example: Actinophrys (Sun animal- cule). III. Radiolaria ; example : Acanthometra, Fig. 2 B.— Actinophrys sol, showing the racuolated ectosarc, the finely granulated endosare, the nucleus, contractile vacuole, and pseu- dopodial filaments. (Aiter Leidy.) Leaving out of onr consideration those simple and incompletely known forms in which no nucleus is developed in the protoplasm (ITIonera),* we may dis- tinguish the naked Amoeba-like Rhizopoda from those * It is possible that in such forms the nuclear substance is diffused through the protoplasm (Gruber).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bell, F. J. (Francis Jeffrey), 1855-1924. London, Cassell
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